Trying to render multiple hair particle systems shows only the first one
Your 2nd and 3rd hair particles are controlled by vertex groups "Group.001" and "Group.002" which don't have any weight applied. Just weight paint them where you want the grass to spread.

Also you should invert the normals of the plane (now they are facing downwards, select all then Shift N in edit mode, choose "inside" option), and put the origin of the grass objects at the bottom of the meshes, so that the leaves grow from their base and not from the middle.